# Calculus (Answer Check)

87,112 results, page 24

### Math - point on the graph (check +help)

Determine the coordinates of the point on the graph of f(x)=sqrt(2x+1) where the tangent line is perpendicular to the line 3x+y+4=0 I do not seem to get the answer... I find the first derivative of f(x0 and equate it to the value of the slope from the tangent line. the answer ...

### Chemistry (just need someone to check my answer)

When iron metal reacts with oxygen, the reaction can form Fe2O3. Write a balanced chemical equation for this reaction, and find the number of moles of oxygen that are needed to form 6 mol of Fe2O3. My answer: 9 moles of oxygen

### 6th grade science - CHECK MY ANSWER

A color-blind woman marries a man who is not color-blind. All of their sons are color-blind, but none of their daughters are color-blind. Color-blindness is likely...? Answer choices: 1.the result of having too few chromosomes. 2.the result of having an extra chromosome. 3.a ...

### Science -Check Answers-

# 2. When __________ forces act on an object, they cause the object to move. •Balanced •Unbalanced (?CORRECT?, MY ANSWER) •Friction •Net # 4. Which of the following terms BEST describes the scenario below? A meteor moving through outer space continues to move on the ...

### Calculus

Find the real solutions of this equation. If there is no real solution enter NONE. (3X+1)^1/2=8 Is the answer 2.93

### Calculus

find all values of x for which function is differentiable. y=lnx^2 why is the answer= for all x doesn't equal 0?

### Calculus

Suppose that f(2)=3 and f′(2)=5. Let g(x)=x^3f(x). Evaluate g′(2). Your final answer should be a single number.

### Did I do this right?-Calculus

y' and y'' for x^2- xy + y^2 = 3 y'= (y-2x)/(2y-x) y'' = [(y'-2)(2y-x)] - [(2yy' - x)(y- 2x)]/ ((2x-y)^2) final answer for second derivative is: [2y^2- 5xy + 2x^2 - 2y^3 + 8xy^2 - 8x^2y/ ((2x-y)^3)] - [(4y + 2x + xy - 2x^2)/((2y-x)^2)] is this right. thank you

### Calculus

g(x)= {0 if x<0 {x^2-2x if 0≤x≤2 {2 if x>2 Find all values x=a where the function is discontinuous. Is the answer 0 and 2 or just 2?

### Calculus

Find y" by implicit differentiation. x^3+y^3 = 1 (x^3)'+(y^3)' = (1)' 3x^2+3y^2(y') = 0 3y^2(y') = -3x^2 y' = -3x^2/3y^2 y' = -x^2/y^2 y" = [(y^2)(-x^2)'-(-x^2)(y^2)']/y^4 y" = [(y^2)(-2x)-(-x^2)(2y)]/y^4 y" = [(-2xy^2)-(-2yx^2)]/y^4 y" = -2xy(y-x)/y^4 y" = [-2x(y-x)]/y^3 My ...

### French 1

could you please check this god bless. Directions are using the following words ma, mon, mes, ta, ton, tes, sa, son, and seu 1. Qui est ----- amie. Answer: Mon amie est Briana. 2. Qui est----- ami. Answer: Mon ami est Alex. 3. Ou habitent ----- grands-parents. Answer: Mes ...

### Calculus Help

If f(x) = sin(7 − 5x), find f′(π), which is the derivative at π: −0.754 −0.657 0 0.657 3.770 I chose 0.657 ... I did not really get this exact answer, its just that while I was trying to figure this out my answer was actually 0.6978 but I just...

### Calculus

alright. i need to write a definite integral for the volume and evaluate the integral for the region bounded by y=x^2, y=0, and x=1 revolved about the a) x-axis, b) the y-axis, c) x=2, and d) y=-2. HELP! Lets do the x=2 axis. dV= pi rh dr where r is radius, h is height. r= x-1...

### Calculus

A steady wind blows a kite due west. The kite's height above ground from horizontal position x = 0 to x = 60 ft is given by y = 150 − 1/40(x − 50)^2. Find the distance traveled by the kite. (Round your answer to one decimal place.) THe answer is supposed to be 94.2...

### English

Identify the sentence that is punctuated correctly. A. Here is our check, Mr. Vons, for $7.35. B. Here is our check Mr. Vons, for $7.35. C. Here is our check, Mr. Vons for $7.35. D. Here is our check Mr. Vons for $7.35. D

### English

Identify the sentence that is punctuated correctly. A. Here is our check, Mr. Vons, for $7.35. B. Here is our check Mr. Vons, for $7.35. C. Here is our check, Mr. Vons for $7.35. D. Here is our check Mr. Vons for $7.35. c

### MATHS

Could you please check my answer? Daniel played a cards game in which each loss meant that he had to give the other player half the cards he had left. He lost four times, one after the other, and then had 3 cards left. How many cards did he have when he started? ANSWER: 72

### Education

Which of the following statements about the field of child development is correct? A. It’s devoted to understanding human constancy and change over the lifespan. B. It’s part of a larger, interdisciplinary field known as developmental science. C. It focuses primarily on ...

### Calculus

The population of bacteria in one cubic centimeter of the blood of a sick person has been modeled by the function P(t) = 80t(0.86^t) where t is the time, in days, since the person became ill. I was able to answer all of the questions besides, Estimate how fast the population ...

### calc check: average value

Find the average value of the function "f(x) = x^2 sqrt(1+x^3)" on the interval [0,2]. and this is what i did.. please check for mistakes. thanks :D f(x) = x^2 sqrt(1+x^3), [0,2] f ave = (1/(b-a))*inegral of a to b for: f(x) dx f ave = (1/(2-0))*integral of 0 to 2 for: x^2 ...

### conclusions - check answer

Which of the following is a true statement about writing introductions of rough drafts? A. Do not worry about the central point of your essay; it will happen later on as you revise your paper. (MY ANSWER) B. Pay close attention to the correct spelling of your words. C. Make ...

### calculus

Find the coordinates of points where the graph of f(x) has horizontal tangents. As a check, graph f(x) and see whether the points you found look as though they have horizontal tangents. f(x) = −x3 + 6x2 − 9x + 13 (x, y) = ( ? ) (smaller x-value) (x, y) = ( ? ) (...

### math net asset value

Please check my answer thanks :) The net asset value of a mutual fund having total assets of $57,000,000 and liabilites of $8,550,00 There are $15,960,000 worth of outsatnding shares my answer is the net value is $4.80 per share

### check

#19, Inclusive Language-Quoting from Biased Material - The mayors and their wives were invited on a tour of the state buildings. Answer: The maors and their wives[sic] were invited on a tour of the state buildings. #8. Puctuation-colon - Studing is exciting: find something ...

### math check

Would some please check these and see if I am doing them right thank you 1. Gasoline is about $2 per gallon. You use about 1 1/2 gallons each day driving to and from work. How much should you budget for gasoline over the next month (about 20 workdays)? Answer 1 1/2 x $2.00 = $...

### Math

so confused on this. I have answered but want someone to check me. Identify the distribution as symmetric, left-skewed, or right skewed. 1. exam scores for an exam in which most students did well, but a few students failed. Answer: Left Skewed 2. Amount of credit card debt of ...

### Algebra-Please check

1. solve sqrt (11-x) = sqrt(x-7) choices are 6,7,8 or9 I think according to my calcs the answer is (9) The range of f(x) = sqrt(3x-6) - 2 answers would be y<= (-2) y>= (-2) y> (-2) y<=(2) I think the answer is y <= -2, correct I don't get this one at all: Solve...

### Calculus

How would I calculate the definite integral of e^(-k/2*x^2) dx over the interval of (0,+∞) I know the answer is sqrt(pi/(2k)), but how would I get that?

### calculus

I am confused on how to write this function as an exponential function having a base 10: P(t)= 50e^(0.5t). The answer in my textbook is: P(t) =50(10)^(t/4.6)

### Calculus

Evaluate the integral: the integral of [5e^(2t)]/[1+4e^(2t)]dt. I used u sub and let u=e^2t and got 5/2arctan(e^2t)+C. But this answer is incorrect. Please help. Thanks

### Calculus

Evaluate the integral: the integral of [5e^(2t)]/[1+4e^(2t)]dt. I used u sub and let u=e^2t and got 5/2arctan(e^2t)+C. But this answer is incorrect. Please help. Thanks

### Calculus

Evaluate the integral: the integral of [5e^(2t)]/[1+4e^(2t)]dt. I have tried this problem so many ways and cannot come up with the correct answer :(

### calculus

what is the equation for taking the derivitive of -x^2+x just equation setup i don't need an answer from power rool

### Calculus

√(x+2) -7 =√(x+9) If you could show your work on how to get the answer that would be awesome. I really need to learn how to do this

### Calculus

Find the derivative of y=cos^6w+cos(w^6) The answer I have is -6(cosw^5sinw+wsin(w^6)) but it's not right...

### Calculus

For what values of x is the graph of the function f(x)= x^2e^x concave down. Give your answer using exact values

### Calculus

Explain why the plane with Cartesian equation 2x+5z-3=0 never intersects the y-axis. Answer:Because there is no y-value in the equation?

### Calculus

If y= (x^2+20)/(x-4) Find all critical Numbers. After get f' i got the answer -5/4. What did i do wrong or is that the critical number?

### calculus

Use a linear approximation of f(x)=^3√x at x=8 to approximate ^3√7. Express your answer as an exact fraction.

### calculus honor

If y = 2x3 – 4x and , find when x = 1. Give only the numerical answer. For example, if = 3, type only 3.

### Calculus

Find d^2y/dx^2 in terms of x and y given that 8x + 6y^2 = 8. Use the original equation to simplify your answer. A. y'' = -(4/9y^3) B. y'' = -9y^3 C. y'' = -4y^3 D. y'' = -27y^3 E. y'' = -(8/27y^3)

### Health law

please check my answer the right to privacy is in the first admendment True or False I said True

### Algebra Can someone who is serious respond

Can someone check my answer please? Find the corresponding y values for x= -2,-1,0,1,2,3 if y= x^-x-2. My answers are under Y. X Y -2 -4 -1 -2 0 -2 1 0 2 4 3 10

### Health

please check my answer thanks True or False Dry heat is the best method of sterilzation I said True

### Math Algebra check please

Solve w= (va)/(r^2+a^2) for a. I applied the quadratic formula a= (v/w +- sqrt (v^2/w^2 - 4*(-wr^2)) /2 and I have the answer as a= (v+/- sqrt[v^2+4w^2r^2]/w is this right?

### English

Question 12 He wrote a hot check. The word hot is used poorly clearly connotatively denotatively Answer D

### Algebra 2

can someone show me how to do it step by step please! Use a graph and table to solve each system. check your answer {y+x=5 {3x-5y=-1

### Chemistry; Check

1. The amount of heat absorbed in a chemical reaction is measured with a thermometer. a. true b. false answer: False

### Science 7R - Hw Qs. Check Q2 (plzzzz read!!!!)

2. Veins leading back in the heart become Answer - smaller and smaller? am i correct?

### Science 7R - Hw Qs. Check (plzzzz read!!!!)

1. Arteries branching away from the heart become Answer -larger and larger? am I correct?

### SS7R - HW Qs. Check (Q3)

The ___________ states the responsibilities of the government and protects the rights of states and citisens answer - south am i correct????????

### Math

Just wanted to check over these.. "What is (–7)^5 in expanded form? –7 • –7 • –7 • –7 • –7 –7 • 5 (–7) • 7 • (–7) • 7 • –7 5 • 5 • 5 • 5 • 5 • 5 • 5" The answer is "–7 • –7 • –7 • –7 • –7", right? Also: "Which...

### Math: Please check answer

3. Which of the following is a solution of x² + 14x + 112 = 0? If necessary, round to the nearest hundredth. A.) x = –0.24 B.) x = –4.24 C.) 4.24 *D.) no solution Thank you

### Media (Ms.Sue or Writeteacher)

Who are the stakeholders in media? once you have helped me with this question, I will post my answer. Please check it thanks

### Math (check answer)

1.never the difference of two positive integers is _____ negative. A.always B.sometimes C.never

### Algebra 2 (Math)

Divide 3x^3 + 3x^2 + 2x – 2 by x + 3 using long division. Check my answer please. 3x^2 – 6x + 20 3x^2 + 12x – 16 3x^2 + 12x – 16, R 58 3x^2 – 6x + 20, R -62 (I think that it's this one)

### Math

What is the ratio of the measures of side BC to side RS in simplest form? (1 point) A.2:1 B.6:2 C.1:2 D.none of these @Ms.Sue My answer is A. can you please check

### Algebra

Please check my answer The ordered pairs (0,1), (1, 6),(2, 36), (3, 216), and (4, 1,296) represent a function. What is a rule that represents this function? A y=x^6*** B y=6x C y=x+6 D y=6x

### check my spanish 3

escriba la forma del verbo indicado en el tiempo indicado yo/ tener/ futuro My answer is tendré

### Precalculus - check

Find the derivative of the function. r(t) = log_4(t + sqrt(t)) My answer (sorry, it's messy): (1+(1/2sqrt(t)))(1/tln(4)+sqrt(t)ln(4))

### Math 116 algebra please check

Solve using the multiplication principle. 10x= -90 The solution is x = -9 please check

### Asap can someone pplz check these answers

Please check my answers I have 2 do other things right now

### Calculus

Find the derivative of F(x)= integral from -2 to x of sqrt(t^3+8)dt? My answer: sqrt(x^3+8)?

### Calculus

Differentiate. e^cos(x^2+1) Is the answer -2xe^cos(x^2+1) sin(x^2+1)?

### Calculus

Differentiate e^cos (x^2+1). My answer: -2xe^cos(x^2 +1) • sin(x^2+1)

### Calculus

If lim x->4 f(x)-5/x-2 =1, find lim x->4 f(x). I know the answer is 7, I need help on solving it. Thanks

### Math--Please Check!!!

Hi, I asked this question yesterday and I was given help in how to solve it. After working the problem, I have came up with $575.27. The problem is: When Beth finishes college, she has a balance or $2876.37 on a credit card with an annual percentage rate (APR) or 17.3% She ...

### Algebra

x^2-5x=-10 =x=5+i sqrt15/2 ,5-i sqrt15/2. CAN SOMEONE CHECK MY ANSWER.

### Problem Solving

Can someone please check my answers for the following problems. 1. Charles works at the movies. He gets paid 10.50 an hour. Charles normally works 8 hours a day, 40 hours a week and gets paid every two weeks. Last week Monday Charles called in sick. On Wednesday Charles only ...

### English

Is there a site where it can accurately check grammar? I use the the Word grammar/spell check, and it still messes up at times :/ thanks much!

### Calculus

f is a continuous function with a domain [−3, 9] such that f of x equals 3 for x between negative 3 and 0 including negative 3, equals negative 1 times x plus 3 for x between 0 and 6 inclusive, and equals negative 3 for x greater than 6 and less than or equal to 9 and let g ...

### math problem check

would some one please see if I am correct with these problems 1.Add. write the answer in simpliest form. 3/11 + 9/11 + 1/11= 13/11= 1 1/2 2. Subtract write the answer in lowest term. 19/24 - 7/24= 12/24 = 1/2 3. Victor owned 9/10 of a family business he sold 2/5 of the ...

### Math

Marco drew 20 pictures. He drew 3/4 of them in art class. How many pictures did Marco draw in art class? Answer: 15 pictures Caroline has 10 marbles. One half of them are blue. How many of Caroline's marbles are blue? Answer: 5 marbles What is the value of the underlined digit...

### Chem

I have 4 questions, I got the answer for three of them and just want you to check and see if they are right and i do not know the answer to the fourth one. 1)4HCl(g)+O2(g)<=>2H2O(g)+2Cl2(g)+114.4 kJ Which side of the reaction will be favoured by an decrease in pressure...

### Math 8R - HW Qs. Check

1) One hundred forty-eight swimmers started a race. Nineteen stopped the race because of cramps. Twelve dropped out because of sunburn. Seventeen did not finish due to fatigue. How many finish the race? 148 - 19 = 129 129 - 12 = 117 117 - 17 = 100 My Answer - 100 Is my answer ...

### Calculus

Given the function y=(x^2-5/x+3), answer the following questions. a) Find dy/dx. Simplify your answer b) Find the coordinates of any points on the graph of y where the tangent line is horizontal. Show your work. c) Are there any points on the graph of y where the tangent line ...

### Calculus

I had this on a test: Use the half-angle formula to find the exact value of the expresseion: sin 22.5 degrees my answer - 1/2 sqrt2 - sqrt 2 was wrong

### Calculus:Help!

Verify using an example that a + ( b• c) = (a •b ) +c ? Explain your reasoning. I have been over this a thousand times and I don't understand (the notes I was given online are incorrect so I don't know how to answer this). THANKS!

### Calculus

This is a tough one :( The region between the graphs of x=y^2 and x=6y is rotated around the line y=6. Find the volume of the resulting solid please... i am unable to get the correct answer :(

### Calculus

Find the volume of the solid obtained by rotating the region bounded by the curves about the line x=-3, y=x^2, x=y^2. I keep getting the wrong answer!! Please hellpp!! =(

### Pre Calculus

Find the measure of the central angle, in radians, given the area of the sector as 22.6 cm2 and a radius equal to 3.7 cm. Round your answer to the nearest tenth.

### Pre- calculus

Find A, given that a = 18.2, B = 62, and C = 48. Round answers to the nearest whole degree. Do not use a decimal point or extra spaces in the answer or it will be marked incorrect.

### Calculus

Given that f is a differentiable function with f(2,5) = 6, fx(2,5) = 1, and fy(2,5) = -1, use a linear approximation to estimate f(2.2,4.9). The answer is supposed to be 6.3. Here's what I've done so far: L(x,y) = f(2,5) + fx(2,5)(x) + fy(2,5)(y) L(x,y) = 6 + x - y L(2.2,4.9...

### Calculus

Find the positive value of x which satisfies x = 4.3cos(x). Give the answer to six places of accuracy. Remember to calculate the trig functions in radian mode

### calculus

Find the value of the limit. lim ã(x+4) - 2 divided by x x->0 The 2 is outside of the square root. The answer is supposed to be 1/4 but I keep getting 0/0 no matter how many times I redo the algebra.

### Pre-Calculus (Trigonometry)

An angle in standard position such that sinÈ = 5/13. Determine the possible values of È, to the nearest degree. Answer: I got 23°. (How do I get the second one?)

### Calculus Linearizations

Use this observation and the linear approximation to estimate (15.9)^1/2 I know the answer is 3.9875, I just need someone to explain the steps so I can do problems similar to this one.

### pre-calculus

Rewrite each equation into slope intercept or special case form. 1) 4x+3=8x 2) 9y-(7+3y)=0 I have no idea how to do these two. Can someone please help me? 3)x/2+y/7=1 My answer is y=-7x+14. Is this correct?

### Calculus

Approximate the area under the curve y=2/x from 1 to 2 using ten approximating rectangles of equal widths and right endpoints. Round your answer to the nearest hundredth

### Physics

The Victoria Falls is the tallest waterfall on Earth measuring 108 meters at its highest point. How long will it take for a single drop of water to fall over its edge into the chasm below? Please check answer, if I am doing it incorrectly help me set it up. the last person who...

### Calculus

q 0 125 250 375 500 625 750 C'(q) 26 24 30 26 23 25 29 a) If the fixed cost is $8500, use the average of left- and right-hand sums to determine the total cost of producing 500 units. Answer: $ b) How much would the total cost increase if production were increased one unit, to ...

### English

Please check my answer thank you:) Does the following sentence demostrate correct subject-verb agreement. Robert's friend Steve, as well as his wife, are going to the fair. In said yes

### English

Please check my answer Does the following sentence contain three prepositions ? James crept down the stairs, through the hall, and into the kitchen I said yes

### Law

please check my answer thanks :) A health care information manager, receives a subponea the legality of which she questions. She should... 1 ignore it 2. seek advice of counsel I said #2

### Health

please check my answer thanks According to OSHA standards, physicians must offer medical office personnel vaccinations against what diease ? I think it is Hepatitis B

### Teaching dogs Tricks

Please check my answer thanks Turning off a light switch requires use of the dog's A. paws. B. nose. C. balance. D. height. I say B

### Check my american gov. work

The group that has the sole power to begin impeachment hearings is----- A. Senate B. Supreme Court C. House of Representatives D. The president's Cabinet Answer: A

### math grade 11

Determine the value of k for which the function f(x)= 4x^2- 3x+2kx+1 has two zeros. check these values in the original equation? i cant figure out the answer to it. It says in the book that it is k<-0.5 or k> 3.5,but i don't know how they got it.

### Chemistry(Urgent, please check!!!)

The equation A + 2 B = C + D describes an elementary reaction, which takes place in a single step. Thus, the rate law must be? My answer is k(A)(B)^2 Is this correct?